(19)
(11) EP 3 907 544 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.02.2022 Bulletin 2022/07

(43) Date of publication A2:
10.11.2021 Bulletin 2021/45

(21) Application number: 21179668.5

(22) Date of filing: 09.05.2014
(51) International Patent Classification (IPC): 
G02B 7/08(2021.01)
G02B 7/34(2021.01)
G03B 17/14(2021.01)
H04N 5/225(2006.01)
 G02B 7/28(2021.01)
G03B 13/36(2021.01)
H04N 5/232(2006.01)
G02B 7/36(2021.01)
(52) Cooperative Patent Classification (CPC):
G03B 13/36; G03B 17/14; G02B 7/36; G03B 19/12; G03B 2206/00; H04N 5/23209; H04N 5/23296; H04N 5/23212; H04N 5/2254
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 10.05.2013 JP 2013100770
10.05.2013 JP 2013100771
10.05.2013 JP 2013100772

(62) Application number of the earlier application in accordance with Art. 76 EPC:
14794746.9 / 2995982

(71) Applicant: NIKON CORPORATION
Minato-ku Tokyo 108-6290 (JP)

(72) Inventor:
  • TOMITA, Hiroyuki
    Tokyo (JP)

(74) Representative: Hewett, Jonathan Michael Richard et al
Venner Shipley LLP 200 Aldersgate
London EC1A 4HD
London EC1A 4HD (GB)

   


(54) LENS BARREL, CAMERA SYSTEM, AND IMAGING DEVICE


(57) A lens barrel of the present invention includes: an imaging optical system including a focus adjustment lens; a driver that drives the focus adjustment lens in a direction of an optical axis; a transceiver that transmits and receives a signal to and from a camera body; and a controller that controls the transceiver to repeatedly transmit a first image plane transfer coefficient which is determined in correspondence with a position of the focus adjustment lens included in the imaging optical system and a second image plane transfer coefficient which does not depend on the position of the focus adjustment lens to the camera body at a predetermined interval, and, when the controller repeatedly transmits the second image plane transfer coefficient to the camera body, the controller varies the second image plane transfer coefficient over time.







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